Spring Integration also provides adapters for streams. Both ByteStreamSourceAdapter and CharacterStreamSourceAdapter extend the PolllingSourceAdapter so that the polling period can be configured, and the Message Bus can automatically detect and schedule them. Both require an InputStream as the single constructor argument. The ByteStreamSourceAdapter also accepts the 'bytesPerMessage' property to determine how many bytes it will attempt to read into each Message.

For target streams, there are also two implementations: ByteStreamTargetAdapter and CharacterStreamTargetAdapter. Each defines a constructor that requires an OutputStream, and each provides a second constructor that adds the optional 'bufferSize' property. Since both of these ultimately implement the MessageHandler interface, they can be referenced from an endpoint configuration as will be described in more detail in the section called “Configuring Message Endpoints”.